Vue Charts advanced usage

Vue Bootstrap 5 Charts advanced usage

This documentation provides examples of advanced chart usage.

Note: Read the API tab in the basic chart docs to find all available options and advanced customization


Options

In most cases, working with advanced charts is related to the handling of options.

MDB provides default options for each chart - you can easily change that by passing an object with your custom options to the Chart constructor.


          <template>
            <MDBChart
              type="bar"
              :data="chartOptionsData"
              :options="chartOptionsOptions"
            />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const chartOptionsData = ref({
                  labels: ["January", "February", "March", "April", "May", "June"],
                  datasets: [
                    {
                      label: "Traffic",
                      data: [30, 15, 62, 65, 61, 6],
                      backgroundColor: [
                        "rgba(255, 99, 132, 0.2)",
                        "rgba(54, 162, 235, 0.2)",
                        "rgba(255, 206, 86, 0.2)",
                        "rgba(75, 192, 192, 0.2)",
                        "rgba(153, 102, 255, 0.2)",
                        "rgba(255, 159, 64, 0.2)"
                      ],
                      borderColor: [
                        "rgba(255,99,132,1)",
                        "rgba(54, 162, 235, 1)",
                        "rgba(255, 206, 86, 1)",
                        "rgba(75, 192, 192, 1)",
                        "rgba(153, 102, 255, 1)",
                        "rgba(255, 159, 64, 1)"
                      ],
                      borderWidth: 1
                    }
                  ]
                });
                const chartOptionsOptions = ref({
                  scales: {
                    x: {
                      ticks: {
                        color: "#4285F4"
                      }
                    },
                    y: {
                      ticks: {
                        color: "#f44242"
                      }
                    }
                  }
                });
                return {
                  chartOptionsData,
                  chartOptionsOptions
                };
              }
            };
          </script>
        

Mixed

With MDB it is possible to create mixed charts that are a combination of two or more different chart types. A common example is a bar chart that also includes a line dataset.


          <template>
            <MDBChart type="bar" :data="chartMixedData" />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const chartMixedData = ref({
                  labels: [
                    "Monday",
                    "Tuesday",
                    "Wednesday",
                    "Thursday",
                    "Friday",
                    "Saturday",
                    "Sunday "
                  ],
                  datasets: [
                    // First dataset (bar)
                    {
                      label: "Impressions",
                      data: [2112, 2343, 2545, 3423, 2365, 1985, 987],
                      order: 2
                    },
                    // Second dataset (line)
                    {
                      label: "Impressions (absolute top) %",
                      data: [211, 2543, 2745, 3123, 2765, 1485, 587],
                      type: "line",
                      order: 1,
                      backgroundColor: "rgba(66, 133, 244, 0.0)",
                      borderColor: "#94DFD7",
                      borderWidth: 2,
                      pointBorderColor: "#94DFD7",
                      pointBackgroundColor: "#94DFD7",
                      lineTension: 0.0
                    }
                  ]
                });
                return {
                  chartMixedData
                };
              }
            };
          </script>
        

Data labels

Add datalabels property to display values directly on a graph.


          <template>
            <MDBChart
              type="pie"
              :data="dataLabelsData"
              :options="dataLabelsOptions"
              datalabels
            />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const dataLabelsData = ref({
                  labels: ["January", "February", "March", "April", "May"],
                  datasets: [
                    {
                      label: "Traffic",
                      data: [30, 45, 62, 65, 61],
                      backgroundColor: [
                        "rgba(63, 81, 181, 0.5)",
                        "rgba(77, 182, 172, 0.5)",
                        "rgba(66, 133, 244, 0.5)",
                        "rgba(156, 39, 176, 0.5)",
                        "rgba(233, 30, 99, 0.5)"
                      ]
                    }
                  ]
                });
                const dataLabelsOptions = {
                  plugins: {
                    datalabels: {
                      formatter: value => {
                        let sum = 0;
                        // Assign the data to the variable and format it according to your needs
                        let dataArr = dataLabelsData.value.datasets[0].data;
                        dataArr.map(data => {
                          sum += data;
                        });
                        let percentage = ((value * 100) / sum).toFixed(2) + "%";
                        return percentage;
                      },
                      color: "white",
                      labels: {
                        title: {
                          font: {
                            size: "14"
                          }
                        }
                      }
                    }
                  }
                };
                return {
                  dataLabelsData,
                  dataLabelsOptions
                };
              }
            };
          </script>
        

Double Y axis

In the example below we created chart with double Y axis with 2 datasets, each one with completely different data range.

Such a construction requires a scale adjustment, so the left axis is assigned and adjusted to the first dataset, and the right axis to the second dataset.


          <template>
            <MDBChart
              type="bar"
              :data="doubleYAxisData"
              :options="doubleYAxisOptions"
            />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const doubleYAxisData = ref({
                  labels: [
                    "Monday",
                    "Tuesday",
                    "Wednesday",
                    "Thursday",
                    "Friday",
                    "Saturday",
                    "Sunday "
                  ],
                  datasets: [
                    {
                      label: "Impressions",
                      data: [2112, 2343, 2545, 3423, 2365, 1985, 987],
                      order: 1,
                      yAxisID: "y"
                    },
                    {
                      label: "Impressions (absolute top) %",
                      yAxisID: "y2",
                      data: [1.5, 2, 0.5, 3, 1.2, 4, 3.4],
                      type: "line",
                      order: 0,
                      backgroundColor: "rgba(66, 133, 244, 0.0)",
                      borderColor: "#94DFD7",
                      borderWidth: 2,
                      pointBorderColor: "#94DFD7",
                      pointBackgroundColor: "#94DFD7",
                      lineTension: 0.0
                    }
                  ]
                });
                const doubleYAxisOptions = ref({
                  scales: {
                    y1: {
                      stacked: false,
                      position: "left",
                      grid: {
                        drawOnChartArea: false,
                        drawBorder: false,
                        drawTicks: false
                      },
                      ticks: {
                        display: false
                      }
                    },
                    y2: {
                      stacked: false,
                      position: "right",
                      grid: {
                        drawOnChartArea: false
                      },
                      ticks: {
                        beginAtZero: true
                      }
                    }
                  }
                });
                return {
                  doubleYAxisData,
                  doubleYAxisOptions
                };
              }
            };
          </script>
        

Funnel

Example of horizontal bar chart with custom options and labels formatting (calculating integers numbers into percentages).

This data visualization is often used to visualize the flow of the website traffic.


          <template>
            <MDBChart
              type="bar"
              :data="funnelChartData"
              :options="funnelChartOptions"
              datalabels
            />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const funnelChartData = ref({
                  labels: ["Product views", "Checkout", "Purchases"],
                  datasets: [
                    {
                      data: [2112, 343, 45],
                      barPercentage: 1.24
                    }
                  ]
                });
                // Options
                const funnelChartOptions = ref({
                  indexAxis: "y",
                  scales: {
                    x: {
                      gridLines: {
                        offsetGridLines: true
                      }
                    }
                  },
                  plugins: {
                    legend: {
                      display: false
                    },
                    datalabels: {
                      formatter: value => {
                        let sum = 0;
                        let dataArr = funnelChartData.value.datasets[0].data;
                        dataArr.map(data => {
                          sum += data;
                        });
                        let percentage = ((value * 100) / sum).toFixed(2) + "%";
                        return percentage;
                      },
                      color: "#4f4f4f",
                      labels: {
                        title: {
                          font: {
                            size: "13"
                          },
                          anchor: "end",
                          align: "right"
                        }
                      }
                    }
                  }
                });
                return {
                  funnelChartData,
                  funnelChartOptions
                };
              }
            };
          </script>
        

Formatting values on the Y axes

In the example below we simply add "$" before each value on the Y axis.


          <template>
            <MDBChart
              type="bar"
              :data="formattingValueData"
              :options="formattingValueOptions"
            />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const formattingValueData = ref({
                  labels: [
                    "Monday",
                    "Tuesday",
                    "Wednesday",
                    "Thursday",
                    "Friday",
                    "Saturday",
                    "Sunday "
                  ],
                  datasets: [
                    {
                      label: "Sales",
                      data: [2112, 2343, 2545, 3423, 2365, 1985, 987]
                    }
                  ]
                });
                // Options
                const formattingValueOptions = ref({
                  scales: {
                    y: {
                      ticks: {
                        callback: function(value) {
                          return "$" + value;
                        }
                      }
                    }
                  }
                });
                return {
                  formattingValueData,
                  formattingValueOptions
                };
              }
            };
          </script>
        

Formatting values in the tooltips

In the example below we simply add "$" before each value displayed in the tooltips.

Hover the line of the chart to see the tooltip.


          <template>
            <MDBChart
              type="line"
              :data="formattingTooltipData"
              :options="formattingTooltipOptions"
            />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const formattingTooltipData = ref({
                  labels: [
                    "Monday",
                    "Tuesday",
                    "Wednesday",
                    "Thursday",
                    "Friday",
                    "Saturday",
                    "Sunday "
                  ],
                  datasets: [
                    {
                      label: "Sales",
                      data: [2112, 2343, 2545, 3423, 2365, 1985, 987]
                    }
                  ]
                });
                // Options
                const formattingTooltipOptions = ref({
                  plugins: {
                    tooltip: {
                      callbacks: {
                        label: function(value) {
                          return `$ ${value.parsed.y}`;
                        }
                      }
                    }
                  }
                });
                return {
                  formattingTooltipData,
                  formattingTooltipOptions
                };
              }
            };
          </script>
        

Double datasets in a bar chart

Example of the double datasets in a bar chart.


          <template>
            <MDBChart
              type="bar"
              :data="doubleDatasetsData"
              :options="doubleDatasetsOptions"
            />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const doubleDatasetsData = ref({
                  labels: ["Desktop", "Mobile", "Tablet"],
                  datasets: [
                    {
                      label: "Users",
                      data: [510, 653, 255]
                    },
                    {
                      label: "Page views",
                      data: [1251, 1553, 1355],
                      backgroundColor: "#94DFD7",
                      borderColor: "#94DFD7"
                    }
                  ]
                });
                // Options
                const doubleDatasetsOptions = ref({
                  scales: {
                    y: {
                      stacked: false,
                      ticks: {
                        beginAtZero: true
                      }
                    },
                    x: {
                      stacked: false
                    }
                  }
                });
                return {
                  doubleDatasetsData,
                  doubleDatasetsOptions
                };
              }
            };
          </script>
        

Async data

Example of the fetching data from the JSON file.


          <template>
            <MDBChart
              type="bar"
              :data="asyncData"
            />
          </template>
        

          <script>
            import { MDBChart } from "mdb-vue-ui-kit";
            import { ref, onMounted } from "vue";
            export default {
              components: {
                MDBChart
              },
              setup() {
                const asyncData = ref({});
                onMounted(() => {
                  fetch(
                    "https://api.covid19api.com/total/country/poland/status/confirmed?from=2020-10-01T00:00:00Z&to=2020-12-01T00:00:00Z"
                  )
                    .then(data => data.json())
                    .then(data => {
                      const dataset = data.map(obj => obj["Cases"]);
                      const labels = data.map(obj => obj["Date"].substr(0, 10));
                      asyncData.value = {
                        labels,
                        datasets: [
                          {
                            color: "#FFCDD2",
                            data: dataset,
                            label: "Number of cases",
                            borderColor: dataset.color
                          }
                        ]
                      };
                    });
                });
                return {
                  asyncData
                };
              }
            };
          </script>